The SC(B) series 30~2500kVA resin insulated dry-type power transformer is engineered to deliver reliable and secure voltage transformation in environments where spatial constraints and fire safety are paramount. Manufactured with precision epoxy resin vacuum casting technology, this F-class insulated unit guarantees structural integrity and electrical stability for medium-to-small load demands across commercial and industrial facilities. The completely oil-free architecture inherently removes the risk of pool fires and soil contamination, making it a highly responsible choice for indoor substations. Operating with a partial discharge level strictly below 10pC and acoustic emissions capped at ≤60dB, the unit functions quietly without causing electromagnetic interference to surrounding sensitive electronics. Every unit undergoes rigorous 100% routine factory testing—including lightning impulse, partial discharge, and temperature rise evaluations—ensuring zero-defect deployment. Fully compliant with IEC, IEEE, and GB 2536-2011 standards, and backed by ISO9001, ISO14001, and CCC certifications, this transformer meets the stringent regulatory and safety requirements of demanding global markets.
At the core of this epoxy resin dry-type transformer is an advanced oil-free architecture that fundamentally eradicates the risk of explosions and toxic fluid leaks. By utilizing premium solid insulation materials, the system requires absolutely no oil level checks, filtration, or dielectric fluid replacements, rendering it virtually maintenance-free over its extended 20 to 30-year operational lifespan. When subjected to extreme heat or external flames, the unit complies strictly with GB 2536-2011 safety standards, emitting minimal smoke with a density index of <50 and zero halogen gases. This characteristic is critical for enclosed spaces, ensuring clear evacuation routes and protecting human occupants. By eliminating the need for complex fire suppression systems and oil containment vaults, facility managers can significantly optimize initial infrastructure investments while achieving long-term sustainability targets.
The thermal regulation mechanism of this transformer combines passive structural cooling with active forced-air technology (AN/AF cooling methods). Engineered with strategically spaced cooling ducts and high-performance aluminum heat sinks, the physical layout maximizes natural air convection. During periods of peak power demand, the integrated axial fans automatically engage to dissipate excess heat, allowing the unit to safely sustain temporary overloads without degrading the F-class insulation. This dynamic balance between passive heat dissipation and active ventilation ensures the internal components remain within safe operating thresholds. The smooth, hard surface of the cast resin also prevents dust accumulation, which can otherwise impede heat transfer, thereby maintaining consistent cooling efficiency throughout the equipment's lifecycle.
The low-voltage windings are meticulously fabricated using high-purity copper foil rather than standard wire, a technique that significantly enhances the mechanical rigidity and short-circuit withstand capability of the transformer. This precision-wound copper foil ensures a uniform distribution of electrical current, drastically minimizing localized hot spots and reducing overall energy losses during continuous operation. To complement this, the high-voltage windings are encapsulated under vacuum conditions with epoxy resin, creating a solid, void-free cylinder that is highly resistant to chemical vapors and mechanical vibrations. The resulting solid-state block feels incredibly dense and resilient, providing exceptional durability against the electrical stresses commonly encountered in heavy-load industrial grids.
Beyond the windings, the transformer utilizes a high-permeability, cold-rolled grain-oriented silicon steel core. The laminations are precisely cut and assembled using a 45-degree fully mitered step-lap joint process. This meticulous craftsmanship minimizes the magnetic circuit's air gap, which directly translates to a substantial reduction in no-load losses and excitation current. The core is securely clamped with insulated structural frames, further dampening operational vibrations and contributing to the ultra-low noise profile.
Modern facility management requires precise data, and this low-noise dry-type transformer delivers with its integrated intelligent temperature control module. Utilizing thermistors embedded directly within the low-voltage windings, the system continuously monitors real-time internal temperatures. The smart controller automatically regulates the axial cooling fans, activating them only when thermal thresholds are breached, thereby conserving energy and reducing mechanical wear on the fan bearings. For centralized facility oversight, the controller features a standard RS485 communication interface. This allows direct integration into existing Building Management Systems (BMS), empowering operators to track temperature trends, receive predictive maintenance alerts, and manage the power distribution node remotely without requiring physical inspections.
Engineered for versatility, the transformer accommodates a wide spectrum of challenging installation environments. It operates reliably across a broad temperature range from -25℃ to 40℃ and is suitable for installations at altitudes up to 1000 meters. The dense epoxy encapsulation provides exceptional moisture resistance, allowing the unit to be safely energized without any pre-drying procedures, even in environments experiencing 100% relative humidity. Depending on specific site safety requirements, the transformer can be supplied with various enclosure protection ratings, including IP00 for standard indoor electrical rooms, IP20 to prevent ingress of solid objects, or IP23 for enhanced protection against dripping water.
The following technical parameters outline the precise operational capabilities and construction standards of the SC(B) series dry-type transformer. Every value is verified through comprehensive factory testing to ensure reliable integration into your electrical infrastructure.
Parameter | Specification |
Rated Capacity Range | 30kVA - 2500kVA |
Insulation Class | F Class (Epoxy Resin Vacuum Casting) |
Partial Discharge | <10pC |
Noise Level | ≤60dB |
Cooling Method | AN/AF (Natural Air/Forced Air) |
Winding Material | Copper Foil |
Communication Interface | RS485 |
Compliance Standard | GB 2536-2011 |
Smoke Density | <50 |
These specifications highlight the unit's capacity to deliver stable voltage transformation while adhering to strict environmental and acoustic regulations. The combination of F-class insulation and copper foil windings guarantees sustained performance even under fluctuating load conditions.
The compact and fire-resistant nature of this dry-type power transformer makes it the optimal choice for a wide array of demanding sectors where safety and spatial efficiency cannot be compromised. Key deployment scenarios include:
Healthcare Facilities: Providing highly stable, uninterrupted power to critical hospital infrastructure, including life-support medical equipment, emergency elevators, and fire safety networks, where oil-free safety is mandatory.
Educational Institutions: Serving schools, universities, and research centers where the ultra-low noise operation (≤60dB) ensures a distraction-free environment for students and faculty.
High-Rise Architecture: Ideal for residential towers and commercial skyscrapers that suffer from limited electrical room space; the compact footprint and zero fire risk allow for safe installation on upper floors or basements.
Data Centers & Telecom Hubs: Safeguarding sensitive IT infrastructure and server racks by delivering clean power with partial discharge levels below 10pC, preventing electromagnetic interference.
Harsh Climate Installations: Thriving in coastal, tropical, or subterranean regions characterized by high humidity levels, thanks to the moisture-proof epoxy resin that permits immediate safe operation without pre-drying.
Commercial Complexes: Powering expansive shopping malls, office buildings, and transit hubs, aligning with green building standards and reducing long-term facility maintenance overhead.
We recognize that complex electrical engineering projects often demand tailored solutions. To accommodate diverse site constraints and specific operational goals, we provide comprehensive customization services for the SC(B) series transformer:
Capacity & Voltage Scaling: Precise custom capacity ratings engineered anywhere within the 30kVA to 2500kVA range, matched with specific primary and secondary voltage requirements.
Bespoke Enclosure Engineering: Specialized housing designs featuring IP20, IP23, or custom protection ratings, dimensionally optimized to fit safely into uniquely shaped or highly restricted installation spaces.
Extreme Environment Fortification: Enhanced anti-corrosion treatments and specialized moisture-sealing protocols designed specifically for highly corrosive industrial plants or marine-adjacent facilities.
Advanced Thermal Management: Customized temperature control modules, including heavy-duty forced-air fan arrays and specialized sensor placements for unique load profiles.
BMS Protocol Integration: Configuring the smart controller's RS485 communication interface to natively speak various industrial protocols for direct integration into your existing building management network.
Aesthetic & Safety Finishes: Specialized industrial paint finishes, custom color-coding to match existing facility aesthetics, and specific warning labels tailored to regional safety standards.
Securing reliable power infrastructure requires not just superior hardware, but also streamlined procurement and unwavering post-installation support. We operate highly standardized production lines that allow us to guarantee rapid manufacturing cycles, delivering your customized transformers with lead times as short as 15 working days. To accommodate diverse international procurement policies, we support highly flexible transaction terms, including L/C, T/T, and D/P.
Prior to dispatch, every unit is secured in specialized, heavy-duty seaworthy packaging designed to prevent moisture ingress and absorb mechanical shocks during long-distance maritime or overland transit. Once the equipment reaches your facility, our commitment continues with comprehensive 7×24 hour global technical response. We provide professional remote or on-site installation guidance, complimentary operational and maintenance training for your facility staff, and a guaranteed long-term supply of original factory spare parts to safeguard your investment for decades to come.
